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Bucket Brigades:
Data Management for Apache 2.0
Cliff Woolley
Apache Portable Runtime Project
Overview
•
What are buckets and what good are they?
•
Data structures
•
Debugging
•
Operations
•
Case study
•
Stupid bucket tricks
What are buckets?
•
Simply: a data source abstraction
•
A convenient, efficient way of handing this
data around without unnecessary copying
bucket
apr_bucket *prev;
apr_bucket *next;
The brigade data structure
•
At its heart, it’s just a ring:
apr_bucket_brigade
{
apr_pool_t *pool;
apr_bucket *prev;
apr_bucket *next;
apr_bucket_alloc_t
*alloc;
}
(the simplified version)
bucket
apr_bucket *prev;
apr_bucket *next;
(the very simplified version)
bucket
apr_bucket *prev;
apr_bucket *next;
bucket
apr_bucket *prev;
apr_bucket *next;
head tail
The bucket data structures
apr_bucket
{
apr_bucket *prev;
apr_bucket *next;
apr_bucket_type_t
*type;
apr_size_t length;
apr_off_t start;
void *data;
apr_bucket_alloc_t
*alloc;
}
apr_bucket_type_t
{
const char *name;
function pointers:
destroy
read
setaside
split
copy
}
apr_bucket_foo
{
type-specific private data
}
剩余43页未读,继续阅读
资源评论
- DayThinking2014-06-06纯英文的ppt,讲解的不够细致
- rinuxx2015-07-14还有什么好说的。找和很久,专业就是专业
- gubei_liu2012-08-16对于初学者,很有用的,谢谢
- chao7422104852012-07-24不错,而且还是英文的,我喜欢
freedomchen
- 粉丝: 0
- 资源: 1
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